Si un pentágono regular tiene 125 cm de perímetro, allá la medida del lado de su pentágono semejante al primero,donde la razón de semajanza es 5/3

Max is building a spherical model of Earth. He is building his model using 2-inch long pieces of wood to construct the radius. The first time he tries to build the model, he uses 3 of the 2-inch pieces of wood end-to-end to make the radius of the model. a) What is the volume of the model in cubic inches? b) In order to purchase the right amount of paint for the outside of the model, Max needs to know the surface area. What is the surface area of the model in square inches? c) Max decides he wants the model to be larger. If he doubles the length of the radius, how many times larger is the volume?

A meteorologist measured the eyes of hurricanes to be 13 to 18 miles in diameter during one season. What is the area of the land underneath the eyes of the hurricanes to the nearest tenth of a square mile? Work must be shown to get credit for this problem!

An angle iron 43.5 inches long has two drilled holes that are equally spaced from the center of the piece. The center distance between the holes is 19.875 inches. What is the distance from each end of the piece to the center of the closest hole?